Simplify3D User Forum

Ive had issues with my filament drive unwinding the filament right before the print executes. It happens at random. I've narrowed it down to something in simplify 3d software. I've used Cura and this never happens.

Sounds like it could be an issue with the start script.

That makes sense. I know nothing about scripting but its a good lead. Thanks!

There are plenty of gcode references on the www. Pick through the scripts in both S3D and Cura to see what they are doing differently. You might be able to spot it pretty easily. gcode is pretty straightforward and simple.

I'll start digging around, thanks

Here's a link to a wiki that explains the gcode syntax: http://reprap.org/wiki/G-code

Awesome thanks!

I checked the script under the fff setting in s3d. Under starting script it says G28; all axes. I also looked at the gcode file itself and this is what I found.

startingGcode,G28 ; home all axes
; layerChangeGcode,
; retractionGcode,
; toolChangeGcode,
; endingGcode,M106 S10,M104 S0 ; turn off extruder,M140 S0 ; turn off bed,G28 ; home axes,;M84 ; disable motors

Does anything look like the culprit to my problem? I find it odd it happens randomly and when it unwinds it could be from a few seconds to almost a minute.

I've checked numerous models and the same model multiple times. so its really hard to track.

The problem happens right after homing the axis